After purchasing this product, I refrained from taking the recommended daily dosage, mainly because I was not sure of the daily amount of copper or iodine my body needs. After doing a little research I found the amount of copper in this product per recommended dosage was good, and in the case of the iodine, I in fact needed more iodine in my diet because I do not eat that much seafood, and only the whites of the eggs.
So in conclusion great mineral formula.